Supervisory & Flow Switches

System Sensor WFD80N 8″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD80N 8″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

Regular price $206.57 USD

Regular price Sale price $206.57 USD
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System Sensor WFD60N 6″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD60N 6″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

Regular price $186.45 USD

Regular price Sale price $186.45 USD
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System Sensor WFD50N 5″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD50N 5″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

Regular price $186.45 USD

Regular price Sale price $186.45 USD
Unit price per
System Sensor WFD40N 4″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD40N 4″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

Regular price $169.08 USD

Regular price Sale price $169.08 USD
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System Sensor WFD30N 3″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD30N 3″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

Regular price $129.42 USD

Regular price Sale price $129.42 USD
Unit price per
System Sensor WFD25N 2-1/2″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD25N 2-1/2″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

Regular price $129.42 USD

Regular price Sale price $129.42 USD
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System Sensor WFD20N 2″ Water Flow Switch – NEMA 4, 450 PSI, UL/FM

System Sensor WFD20N 2″ Water Flow Switch – NEMA 4, 450 PSI, UL/FM

Regular price $129.42 USD

Regular price Sale price $129.42 USD
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System Sensor WFD80N 8″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD80N 8″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD60N 6″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD60N 6″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD50N 5″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD50N 5″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD40N 4″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD40N 4″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD30N 3″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD30N 3″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD25N 2-1/2″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD25N 2-1/2″ Fire Sprinkler Water Flow Switch – UL/FM, NEMA 4, 450 PSI

System Sensor WFD20N 2″ Water Flow Switch – NEMA 4, 450 PSI, UL/FM

System Sensor WFD20N 2″ Water Flow Switch – NEMA 4, 450 PSI, UL/FM